mr. obama's highest rating was 68% in april of 2009. >>> today the inauguration festivities kicked off with a nationwide day of service. and susan mcginnis is in washington, d.c. where there was a concert for young guests and military families. susan? >> reporter: hi, ann. after the national day of service went really well here today, it was a beautiful day, folks out here trying to find out how to help communities and meeting up with investment organizations, about -- volunteer organizations, about 100 of them. and it started at the last inaugural, and that is star studded talent. the cast of glee was there. katy perry and to kick off the event was usher. >> reporter: the stars came out for one of the first big inaugural galas. katy perry headlined the kids concert in washington. >> i'm very, very proud to be a part of this weekend and to see the obamas and the bidens for four more years. >> the first lady and her daughters joined the crowd of more than 5,000 to honor military families.